推荐回答(1个)
其优点是:
快速搭建分布环境【通过简单的参数配置】
自动分配测试脚本【针对不同环境】
只需一份测试代码【目标测试机不需要有测试代码】
搭建Selenium2环境
在搭建Selenium-Grid之前,首先要搭建每台测试机上的Selenium环境【准确点说应该是代理节点的环境】。这里以Java为例:
安装Java【下载】
配置Java环境变量【这里】
下载ie、chrome的driver程序【如果要测试其它浏览器还需额外下载;FF驱动默认在webdriver中,无需下载】
把ie、chrome的driver程序放到系统环境变量中【例如:system32下】
安装最新版的浏览器【FF、chrome等】
下载Selenium Webdriver【下载standalone server】
代码测试
本地版:
[java] view plaincopy
import org.openqa.selenium.*;
import org.openqa.selenium.firefox.*;
import org.openqa.selenium.chrome.*;
import org.openqa.selenium.htmlunit.*;
import org.openqa.selenium.ie.*;
// WebDriver driver = new ChromeDriver();
// WebDriver driver = new FirefoxDriver();
// WebDriver driver = new HtmlUnitDriver();
WebDriver driver = new InternetExplorerDriver();
driver.get("http://www.dangdang.com");
System.out.println(driver.getCurrentUrl());
driver.quit();
远程版:
[java] view plaincopy
import org.openqa.selenium.*;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;
DesiredCapabilities ffDesiredcap = DesiredCapabilities.firefox();
DesiredCapabilities chromeDesiredcap = DesiredCapabilities.chrome();
DesiredCapabilities ieDesiredcap = DesiredCapabilities.internetExplorer();
WebDriver wd = new RemoteWebDriver(new URL("http://localhost:4444/wd/hub"), ieDesiredcap);
wd.get("http://www.google.com");
Thread.sleep(1200);
System.out.println(wd.getCurrentUrl());
wd.quit();
上述测试都成功了,就说明你的环境已经搭建成功,依次你可以在多个系统、平台上搭建Selenium2环境。
注:
如果使用IDE则把selenium-standalone-server的jar包引用到项目build path,如果直接从命令行编译和执行的话,则必须指定该jar包的路径,否则编译会失败。
[java] view plaincopy
javac -classpath $HOME/path/to/selenium-server.jar Test.java
java -classpath $HOME/path/to/selenium-server.jar Test
搭建Selenium-Grid环境
当所有测试机上的Selenium2环境搭建成功后,就可以开始启动Selenium-Grid2环境了。【Selenium-Grid的工作原理】
首先启动一个hub:
[java] view plaincopy
java -jar selenium-server-standalone-x.xx.x.jar -role hub
启动hub的机器可以不是测试机,任意一台机器有Java环境的机器都可以。这个是整个Selenium-Grid的中枢节点,所有的远程测试都会由经它后再被转发出去,然后在对应的测试机上执行测试。
启动测试代理node:
[java] view plaincopy
java -jar selenium-server-standalone-x.xx.x.jar -role node
测试代理必须在测试机上启动【即之前搭建了Selenium2环境的机器上】,并且其注册的地址必须是hub所在的机器的ip和端口。一台测试机上可以启动多个代理,前提是要保证不使用相同的端口即可。【当然不建议这样做,尽量避免不稳定因素】
查看Selenium-Grid状态
当hub和所有的代理节点都启动成功后,可以通过浏览器查看当前Selenium-Grid的状态,直接访问地址http://localhost:4444/grid/console。 可以看到页面显示了可以支持测试的代理节点的数量和类型,这里显示的数量和类型和你启动代理节点时所带的配置参数有关。当启动代理节点时其实就是一个注册过程;启动时所带的参数会被hub记住作为注册信息,所以页面中所看到的信息就是各代理节点注册时信息的汇总。
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